discovering spatial co-location patterns: a summary of results

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ê�>PH:M{C³L?>Pâ³C¹á]ø¿ßPà- ! ��õ�<FC³ê:<¾<Î>I@#>Pâ³H_E�>IMFø¿ãÎE�E�LÊê�>Pâ¸ê�RFâ¸>iá_E�M�>PL?M/GAE�Þ{á�C³L/á¶<FE%Þ?H¶E�ûZC³ßIRÎ@Cxá_E�H:>iá¶C³ßILÎ@ �#á¶ß/SIE�á�á¶<FE2ê�ßIL?M{C¹á¶C³ßILÎ>PâfÞFH¶ßAã?>Pã?C¹â³Cxá]øAñ���� �OH¶ß{M{R?ê�E�� - ! . - � - !fC¹à½á¶<?Eê�ßILÎM{Cxá_C¹ßAL?>Pâ«Þ?H¶ßAã?>PãFC³â³Cxá]ø%C¸@�>Pã$ßiûIE�R?@¶E�H�@¶ÞÎEWê�C¹ÿ?E�M�á_<FH¶EW@B<?ßIâ¸M«ñ

A

P2P3P4P10

P5P7P8

P1

P11

B C

P6P9P12

spatial join instead ofgenalized apriori-gen

a)

Row instances need not be ordered if

is used

d)

k=2

A B A C B C

P2 P1 P4 P5P10 P5

P7 P6P11 P9

P2 P12P10 P6

co-locationb) c)

row instance

11

1 .3

1/6 4/15

1/60

will be pruned ifmin_prevalenceset to .2 and algorithm stops

k=1 1 2 3 4 5 6

7e)

candidate co-locations of size 2

A B 1 2

B C 2 3A C 1 3

A B C

P10 P5 P6

k=3

candidate co-locations of size 3

A B C 4 5

table instance

participation index

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Pi.T represents instance Pi with feature type T

Lines between instances represents neighbor relationships

Legend:

P12.C

P2.A

P11.B

P7.B

P10.A

P3.A

P9.C

P8.B

P6.C

P1.B

P4.A

P5.B

����� ° � ° z«¼Ag�V#XA|x\fe�g�[Bg�²=g�oh\

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